Comment by chop360

I would assume that they all stack but I want to be sure. Any helpful replies would be much appreciated.

Comment by MMOSimca

In Patch 3.3.5, this was called Glyph of Dark Death (Major).

In Patch 4.0.1, it has been changed to Glyph of Death Coil (Prime). The effect remains the same.

I'm actually confused as to why they changed the name because now there are TWO Glyphs of Death Coil in the game with different effects (Death Knight and Warlock). Kind of confusing for new players or people trying to look for the Glyph on the Auction House, honestly.

Comment by Otore

As of the current Mists Beta patch, glyph of death coil has been changed to read:

Your Death Coil spell is now usable on all allies. When cast on a non-undead ally, Death Coil shrouds them with a protective barrier that absorbs up to 1133 + 0.514 * AP * 1 damage.(exact same formula as Death Coil's damage)

However, this absorbtion effect is not useable on your own death knight. It must be used on another friendly character. This was likely done to prevent the creation of a mandatory tanking major glyph.

The absorbtion effect is called Death Barrier (12 second duration, does not stack).

Comment by hute

Ive been trying out this glyph a few times now, Im a blood death knight, and the Absorbtion amount from this glyph becomes very high with vengeance, and in fights when u know high dmg will come on other ppl,its actully pretty handy.

This could very well save a person that screws up tacts somewhere or gets unlucky on damage.I urge Blood tanks to try this out, if its not for you, then fine, i dont see it as mandatory, but its nice.Im going between this glyph and glyph of Ice toutch for the dispell.